/**
* @param \WoohooLabs\Yin\JsonApi\Transformer\Transformation $transformation
* @param mixed $domainObject
* @param string $relationshipName
* @param array $defaultRelationships
* @return array
*/
protected function transformResource(Transformation $transformation, $domainObject, $relationshipName, array $defaultRelationships)
{
if ($transformation->request->isIncludedRelationship($transformation->basePath, $relationshipName, $defaultRelationships)) {
$transformation->data->addIncludedResource($this->resourceTransformer->transformToResource($transformation, $domainObject));
}
return $this->resourceTransformer->transformToResourceIdentifier($domainObject);
}